I think op already understood it was a glitch which is why he titled the subject of this thread "Stake balance glitch".
So I don't see any need for him to share screenshot here for us to try to find out what the problem is or was for him, he himself already knew what the problem was.
You should contact their representative here. I believe your complaint would be looked into. It is good you noticed it and raised a complaint immediately because I other members begin to experience such then stake would have to explain themselves better